Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 501-520 of 3826
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Deep Percolation under Irrigated Water-Intensive Crops
(American Society of Civil Engineers, 2018)Deep percolation from an irrigated field has received little attention in research studies although it contributes to significant loss of fresh water in a given region. Deep percolation is often estimated as a residual in ... -
Experimental Study and Numerical Simulation of Inclined Rectangular Weirs
(American Society of Civil Engineers, 2018)Inclined rectangular weirs, also named pivot weirs, are used both to adjust the upstream water level and to increase the flow capacity compared with that of normal rectangular weirs. However, the experimental studies ... -
Evaluating Atmometer Performance for Estimating Reference Evapotranspiration in Ventilated and Unventilated Greenhouses
(American Society of Civil Engineers, 2018)Reference evapotranspiration (ETo) estimates in greenhouses require the measurement of several meteorological variables. These measurements are not always conducted by water managers. The ETo estimates also depend on the ... -
Evaluating Class A Pan–Based Estimates of Daily Reference Evapotranspiration with Respect to Irrigation Scheduling on Sandy Soils in a Hot Arid Environment
(American Society of Civil Engineers, 2018)The performance of Class A pan data and six commonly used pan coefficient (kp) approaches were evaluated with respect to the reference evapotranspiration (ET) in a typical farm setup of a hot arid environment. To assess ... -
High-Resolution GOES Insolation–Evapotranspiration Data Set for Water Resource Management in Florida: 1995–2015
(American Society of Civil Engineers, 2018)This paper reviews and summarizes the continued development of satellite-based estimates of insolation (incoming solar radiation), reference evapotranspiration (RET), and potential evapotranspiration (PET), computed for ... -
Closed-Form Solutions of the Energy Balance Equation for Drip Laterals under the Darcy-Weisbach Resistance Formula
(American Society of Civil Engineers, 2018)Many studies have investigated easy methods to design drip laterals, as well as the best resistance equation to use, which is fundamental to accurately account for friction losses. This paper addresses both the features ... -
Solving Trapezoidal Free Overfall by Inserting a Brink Pressure Effect into Sharp-Crested Weir Theory
(American Society of Civil Engineers, 2018)Free overfalls offer a simple approach to determining a discharge using a single depth measurement at the end section (brink) of a channel. Fundamental equations based on the sharp-crested weir theory, both continuity and ... -
Optimization of a Basin Network Using Hybridized Global Search Algorithms
(American Society of Civil Engineers, 2018)Over the last few decades, groundwater resources in many regions have been depleted at a higher rate than the underlying aquifers have been replenished. This imbalance has led water management agencies to consider managed ... -
Expected Irrigation Reductions Using Multiple-Inlet Rice Irrigation under Rainfall Conditions of the Lower Mississippi River Valley
(American Society of Civil Engineers, 2018)Multiple-inlet rice irrigation (MIRI) decreased irrigation applications by an average of 24% over an 86-day flood when compared to single-inlet (SI) rice flood distribution. Even in the absence of rainfall, MIRI required ... -
Modification of the Hargreaves–Samani Model for Estimating Solar Radiation from Temperature and Humidity Data
(American Society of Civil Engineers, 2018)A new formula is introduced to estimate solar radiation, RS (MJ/m2/d), using maximum and minimum air temperature, Tmax (°C) and Tmin (°C), respectively, as well as relative humidity, RH (%). This technical note describes ... -
Reynolds-Averaged Navier-Stokes Modeling of Submerged Ogee Weirs
(American Society of Civil Engineers, 2018)The present study documents the successful application of a Reynolds-averaged Navier-Stokes model with conventional turbulence closure to calculate discharge coefficients for submerged flow conditions at ogee-type weirs. ... -
Transient Water-Table Recession in Drained Lands Modeled Using HYDRUS and Compared with Theoretical Analyses Assuming a Succession of Momentarily Steady States
(American Society of Civil Engineers, 2018)The transient water-table recession in lands drained by parallel lines of ditches extending down to a horizontal floor was numerically modeled for sand and silty clay when the ditch-water level was dropped from an initial ... -
Buried Lifting Sprinkling Irrigation Device
(American Society of Civil Engineers, 2018)Sprinkler irrigation is widely used in agricultural irrigation as an important component of conserving water. Traditional fixed-sprinkler irrigation systems interfere with farming operations. To address this shortcoming, ... -
Application of Cat Swarm Optimization Algorithm for Optimal Reservoir Operation
(American Society of Civil Engineers, 2018)The scarcity of water resources throughout the world has caused many complexities in meeting water demands, which in turn has created a tendency toward developing more efficient and effective methods for optimum operation ... -
Closure to “Application of the Firefly Algorithm to Optimal Operation of Reservoirs with the Purpose of Irrigation Supply and Hydropower Production” by Irene Garousi-Nejad, Omid Bozorg-Haddad, Hugo A. Loáiciga, and Miguel A. Mariño
(American Society of Civil Engineers, 2018) -
Matrix Methodology to Study the Probability of Pressure Deficit in On-Demand Branched Irrigation Networks
(American Society of Civil Engineers, 2018)This paper presents a matrix algebraic expression based on the probability of pressure deficit. A set of expressions to calculate the average and the variance of the aggregated head losses in any pathway of the irrigation ...